Electric regulation.



J. L. GREV BL ING. ELECTRIC REGULATION. APPLICATION FILED SEPT. 22,1911.

1 1,125,267. Patented Jan. 1911915.

WITNESSES UNITED STATES PATENT orrroir.

JOHN L. CREVELING, NEW YORK, N. Y., ASSIGNOR TO SAFETY CAB, HEATING ANDLIGETENG- COMPANY, A CORPORATION OF NEW JERSEY.

ELECTRIC REGULATION.

Application filed September 22, 1911.

To all whom it may concern:

Be-it known that I, Jenn L. CRnvnLINe, a 'resident of New York,.in thecounty and State of New York, have invented certain new and usefulImprovements in Electric Regulation, as set. forth in the annexedspecification and. drawing, forming a part thereof.

My invention pertains to that class of electric regulation wherein it isdesired to regulate: a dynamo or generator in a predetermined manner andhas for itspa'rticular object to, provide means for automatically thusregulating a dynamo.

As my invention is particularly applicable; to systems of electricdistribution wherein a dynamo is used to charge; aston age battery andfurnish current to lamps-or other translating devices, it will be described in connection with such a system.

The drawing is a diagrammatic representation of one type of systemembodying the essentials of my invention.

v In the drawing, l represents a dynamo or generator provided with theusual field coil 2, having in series therewith the resistance 3,indicated as of the carbon pile variety, and it will be obvious that thedynamo may be regulated by proper manipulation of said resistance. -Thisresistance 3 may be controlled by the lever 4 normally drawn in anupward direction, as by adjustable spring 5, in such manner as to tendto compress the carbon pile 3 and lower the resistance thereof. Thelever 4 carries at one extremity a core of magnetic material 6 and. thusmotion imparted to said core may serve to regulate the generator.Theresistance 3 may. also be controlled by the lever 7 normally drawnina downward. direction, as by the adjustable spring 8, in such manneras to tend to compress the carbon pile 3, and lower the resistancethereof. The lever 7 is provided at one extremity with a. core 9 ofmagnetlc material and thus the generator may be regulated by motionimparted to the said core.

10 represents the positive lead of the gensucliswitch'es-are knowniii-theart and the Specification of Letters Patent.

Patented Jan. 19, 1915.

Serial No. 650,697.

particular type of switch forms no part of my present mvention, thepresence of one of the well known types is merely indicated dagrammatically. From the switch 11, the lead 10 continues to one side ofthe switch 12 and is connected with the positive s de of the storagebattery 13, the negative side of which is connected as by wire 14 withone. end of the solenoid coil 15 surrounding the core 6, and having itsother termlnal connected as by lead 16. to the negative brush of thegenerator. From the switch 12, the wire 17 is carried to one side of:the lamps or other translating devices 18, having their negativeterminals connected with the wire 19 which is carried to one side of atranslation circuit regulator, in this instance indicated as a carbonpile 20 having its opposite terminal connected as by wire 21, with thesolenoid coil 22, the opposite end of which is in connection with thewire 1%. The coils 15 and 22 are differentially wound so that if eitherbe alone energized the same will tend to draw the core 6 downwardlyagainst the action of spring 5 and increase the resistance 3, and sowound that current passing through the coil 15 when the battery is beingcharged will set up a magneto-motive force in the reverse direction tothat set up by the coil 22 when the current is passing through coil 22from the lamps or translating devices to the battery. The solenoid coils15 and 22 are connected in series relation with the generator andtranslation circuits by the wires 16 and 21 and the coil 15 is connectedin series alone with the generator and with the storage battery 13 bythe wire 14.

23 is a coil in shunt across the generator circuit surrounding the core9 in such manner that, when energized. it tends to draw the core 9upwardly and increase the resistance 3. The carbon pile 20 is controlledby the lever 2i normally drawn in a downward direction as by spring 25and provided at one extremity with the core 26 surrounded by a solenoidcoil 27 in shunt across the translation circuit.

28 represents adjustable stops limiting the motion of levers 4: and 7which may be used to prevent one lever following the other.

An operation of the herein shown system comprehending my invention issubstan, tially as follows: If the dynamobe running" at such speed thatits electro-motive force be suflicient to-charge the storage battery,the

switch 11 will be closed and current will flow from the generatorthrough lead 10, {switch 11, storage battery 13, wire 14, coil 1 jar-idlead 16 to the generator, and I so adthe spring 5 that when the desiredmaxia, mum current is flowing through the battery and coil 15, anyappreciable increase above this maximum current will cause the coil i todraw the core 6 downwardly against the action ofspring 5, and increasethe resistance 3, in such manner as to hold this desired maximumcharging current from being ex- 5 ceed'ed. If, now, the'battery becharged at this maximum' rate until its voltage has l so as to-preventthis maximum desired volt- 1 age being exceeded by the generator in awell-known manner; If, now, the lamp cirbe closed, as by closing theswitch 12,

current-will flow through switch 12, wire17,

30. translating devices 18, wire 19, resistance 20,

wire 21 and solenoid coil 22, thence through enoid l5 and wire 16 to thegenerator, as the solenoid coil 22 is wound in such irection that thiscoil when thus traversed by current opposes the action of the chargingcurrent in the coil-15, the eifect of the lamp load will be to cause agreater current to be necessary in the coil 15 in order to 'draw thecore 6 downwardly against the spring 5 and thus the generator outputwill be increased in proportion to the lamp or translation circuit loadflowing through the coil 22. If the volta 'e across the translatingdevices be in excess f that desired to have impressed upon the same, Iso adjust the spring 25 that the coil solenoid 27 Will raise the core 26and lever 24 and increase the resistance 20 until the proper voltage isimpressed upon the translation circuit, then any tendency to rise abovethis voltage will 85 translation circuit and the said current regu- 3cause the resistance 20-to be increased and.

, main circuit, a storage battery, a translation lation of the generatoris affected by the operation of the translation circuit regulator bycontrol of the current in the coil 22.

I- do not wishin, any way to limit myself to the exact system set forthin this applica- 7o t1on merely to illustrate 'one'type of systemcomprehending the essentials ofmy invention, forit will be obvious thatwide departure maybe made without departing from the sp1r1t and scope ofmy invention whichis as set forth in the following claims I claim a '1.The combination with a generator, a main circuit, a storage'battery,-atranslation circuit, and means for regulating the gener- 8G atorembracing a single variable resistance and control means thereforincluding two differentially wound coils located in series w th thegenerator and the translation circult, one of said coils being connectedin series with the battery, and additional control means acting upon thesame variable resistance including a coil connected to be actu-' ated bythe generator only.

2 The combination with a generator, a main c rcuit, a storage battery, atranslation I circuit, and'means for regulating the generator embracingasingle variable resistance and control means therefor adapted to beacted upon by two differentially wohnd coils located in series relationwith the generator I and the translation circuit, one of said coilsbeing additionally connected in" series with the battery, and additionalcontrol means acting upon the same variable resistance and including acoil connected to be actuated by the generator only. V

3. The combination with a generator, a main circuit, a storage battery,a translation circuit, and means for regulating the generator embracinga single variable resistance, spring controlled means therefor adaptedto be operated upon by a solenoid embracing two differentially woundcoils located in series with the generator and the translation circuit,one of said coils being additionally connected in series with thebattery and a second spring controlled means acting upon the samevariable resistance and embracing a solenoid coil connected to beactuated by the generator, and a core actuated by the last-named coil tooppose the last-named spring controlled means.

' 4:. The combination with a generator, a

circuit, and means for regulating the generator embracing asingle'variable resistance and resistance varying means operating uponthe opposite ends of said resistance;- together "with control meanstherefor, one of said control means constituting two differential coilslocated in series relation with the generator and the translationcircuit, one of said coils being connected also, in series with thebattery, theother'gcontggljmeans embrac ing a solenoid coil connected tobe actuated by the generator, and spring controlled means for opposingthe operation of said coils.

5. The combination with a generator, a main circuit, a storage battery,a translation circuit, and means for regulating the, generator embracinga single variable resistance and resistance varying means operating uponthe opposite ends of said resistance; together with control meanstherefor, one of said control means constituting differentially woundcoils located in series relation between the generator and thetranslation circuit, one of said coils being connected also in serieswith the battery, and additional control means acting upon the samevariable resistance and embracing a coil connected to be actuated by thegenerator only.

6. The combination with a generator, a main circuit, a storage battery,a translation circuit, and means for regulating the generator embracingmeans for providing resistance, and control means, including twodifferentially wound coils located in series with the generator and thetranslation circuit, one of said coils being connected in series withthe battery, and additional control means including a coil connected tobe actuated by the generator only. v

7. The combination with a generator, a main circuit, a storage battery,a translation circuit, and means for regulating the generator embracingmeans for providing resistance, and control means adapted to be actedupon by two differentially wound coils lo- 'cated in series relationwith the generator and translation circuit, one of said coils beingadditionally connected in series with the battery, and additionalcontrol means in cluding a coil connected to be actuated by thegenerator only.

8. The combination with a generator, a main circuit, a storage battery,a translation circuit, and means for regulating the generator embracingmeans for providing resistance, spring-controlledmeans adapted to beoperated upon by a solenoid embracing two differentially wound coilslocated in series with the generator and the translation circuit, oneofsaid coils being additionally connected in series-with the battery,and a second spring-controlled means embracing a solenoid coil connectedto be actuated by the generator, and acore actuated by the lastnamedcoil to oppose the last-named springcontrolled means.

9. The combination with a generator, a main circuit, a storage battery,a translation circuit, and means for regulating the generator embracingmeans for providing resistance and resistance varying 'means, togetherwith control means therefor, constituting two ditl'erential coilslocated in series relation with the generator and the ranslationcircuit, one of said coils being also connected in series with thebattery, and other control. means embracing a solenoid coil connected tobe actuated by the generator, and springcontrolled means for opposingthe operation of said coils.

' 10. The combination with& generator, a main circuit, a storagebattery, a translation circuit, and means for regulating the generatorembracing means for providing resistance and resistance varying means,together with control means for the resistance varying means,constituting ditferentially wound coils located in series relation withthe generator and the translation circuit, one of said coils beingconnected als in series with the battery, and additional control meansembracing a coil connected to beactuated by the generator only.

JOHN L. CREVELING.

Witnesses:

ANNA M. WALL, M. HERSKOVITZ.

